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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/2940

Title: Performance analysis of maximum likelihood decode and forward cooperative systems in Rayleigh fading
Authors: SHARMA, GVV
GANWANI, V
DESAI, UB
MERCHANT, SN
Keywords: wireless networks
diversity
demodulation
protocols
Issue Date: 2009
Publisher: IEEE
Citation: 2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8,3967-3971
Abstract: The bit error rate (BER) performance analysis of maximum-likelihood (ML) based decode and forward (DF) cooperative diversity systems has been a subject of considerable interest. Exact analysis of ML-DF transmission has been considered a challenging problem due to the nonlinear characteristic of the ML detector. In this paper, we provide exact expressions for the BER of ML-DF cooperative systems employing a single relay. We extend these results to the case of multiple relays for the piecewise linear (PL) combiner, that is known to be a close approximation of the ML detector. This is done by using a novel theory of conditionally Gaussian random variables. By expressing the ML decision variable in terms of functions of conditionally Gaussian variables, exact expressions for the BER of the ML-DF system are obtained. Through simulation results, we verify the validity of the derived analytical expressions.
URI: http://dspace.library.iitb.ac.in/xmlui/handle/10054/16464
http://hdl.handle.net/100/2940
ISBN: 978-1-4244-3434-3
ISSN: 1550-3607
Appears in Collections:Proceedings papers

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